Edward k



l UNITED 'STATESV EDWARD K. PARKER,y or RANDOLPH, MASSACHUSETTS.

PORTABLE FlRiafExTileuter-HER.l

SPECIFICATION forming part of Letters Patent No, 381,276, dated April 17, 18.88.

` Application led June 9,1867.. Se1ialN0.240,741. (No modell f i vful Improvements in Portable Fire Extinguishers, of which the following, taken in connecti'on with the accompanying drawings, is a specication.

valve-cage and valve.

This invention relates'to improvements in portable tire-extinguishers, and particularly to an improved valve-cage for vlimiting the upward motion of the ball suction-valve in the valve-case, yas Awill hereinafterl be more fully shown and described, reference being had to the accompanying drawings, wherein-- Figure l yrepresents a vertical Alongitudinal section of the lire-.extinguisher provided with my improvement, and Fig. 2 represents a detail sectional view` of the pump-cylinder and mechanism for removing and replacing the Fig.`3 is a detail perspective view ofthe improved valvecage,

Y Similar letters refer to similar parts wherever they occur on the different parts of the drawings.V v

a is the tank with its cover a',provided with filling-tube b and its removable coverb. y y

c is the valve-case,secured to bottom of tank a, and having inlet-opening c', valve-seat c,

suction ball-valve c, chambered. passage c,v

rforation in the cover-a where it is soldered tightly to said cover, and provided in its upper end with a removable cap, d', in the ordi -nary way.

d" is the pistonrod, as usual, guided in a central perforation in pump-coverd, and hav# ing `handle da in its upper end and piston` or plunger din its lower end,'in the usual manner, as shown in Figrl.l y'

e is the air-chamber-its lower end being secured to the valvecase c, and its upper end deliverypipe e, thatextends downward within PATENTA OEFICE1- a removable copvere", to which is attachedthe the air-'chamber e, as shown in Fig. 1, and has in'itsklow'e'r end a 'slitted bell-shapedmoutrh, e3 e", and near its lowerend a centering-disk,

e5, as fully shown and described in, my appli.

cation for improvements in portablejirelex-V tinguishers,led lNovember 3,1886, Serial No.

217 ,855; and' I wish to state that theconstruc-v tion and arrangements oftheparts hereinaboveV described form no part of mypresent invention. h

Above the valve-seat c for the suction-valve c3, I make in the interior of the valve-case c 'an `annular groove, c7, which is yadapted toretain L in position the improvedsuotion-valve cage Shown 'in detail yin Fig. 3. VSaid improved valve-cage consistsof'two or more'arched spring-baile, c o8, riveted or otherwise secured together in their upper ends, and having'in their lower ends outwardly-'projecting lipsc cadapted to spring into the annular grooveX the need of vrivets or soldering, as heretofore done; and by this yarrangement saidvalve# i cage may be instantly detached' from the case c whenever the suction ball-valvee3 is worn or abraded so 'as vnot to perform its proper func-j tion of closing the opening in the valve-seat c during the downward stroke of the piston dt.

When it is desired to'removefthe'valvecage c8 c? and the suction-valve cs from the t oS o8 of the suction-valve cage I cause said valvecage to be contracted sufficiently to cause its lips cfc9 to'be disengaged from the annular'l groove c7 in lValve-shell c, as showninJFig. v2',V

and' the'lower ends of the spring portions c c .95

caused to bear against the ball-valveoa, `after l which I'Withdraw the tube f from the pump'- 5v i is held in position/'within the case c without y valveshell c, I remove the pumpcylinder capd and the piston-rod d, with its pistond4 and handle d,from the cylinder d, andI introduce I co y: 'y

cylinder Land with it the spring-cage cucfand f ball-valve c3,- without theneed ofthe removal f of the pumpicylinder d. After thevalve-cage roo projecting through a perforation in the cover a', where it is soldered to the latter, said air- 50 chamber being providedin its upper end with and valve have been removed, as above set forth, I remove the valve from its cage and replace it with a new one,and introduce the tube fand the spring-cage and suction ball-valve 5 held in its lower end within the cylinder d until the lips o o9 of the valve-cage rest on the valve-seat c. I then introduce within the tubef the cylindrical follower y, the lower end, g', of which is preferably made concave,

lo as shown in Fig. 2, until the lower end of said follower is made to rest ontop of the valvecage, and I hold it in such position while I move the tube f upward, thus allowing the now-liberated spring-hails of 0B to expand and I5 causing their lips e e9 to enter the annular groove c7 in the valve-case c. The cylinder f and its followerg are then removed from within the cylinder d, and the piston-rod d, piston d, and cap dplaced in position, as shown in Fig.

2o 1. This is-agreat improvement in pumps, as

without it it would be very inconvenient andV laborious to remove the valve cage and its suction balLvalve without removing the pu mpcase c, having the internal annular groove, c7,

in combination with the improved removable valve-cage composed of two or more arched spring-hails, cta es, secured together in their upper ends, and having outwardly-projecting lips o9 c9 in their lower ends adapted to enter and rest within said annular groove c", as and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses, on this 18th day of February, A. D.f1887.

EDWARD K. PARKER.

Witnesses:

ALBAN ANDRN, HENRY GHADBOURN.' 

